Correct. That's the bottom line. And no US court will ever rule that a person who was a US citizen at birth is not a natural born citizen. It simply makes no sense.
Someone who is a US citizen at birth has not been naturalized, and thus they are natural born.
All else is obfuscation.
One means is to pass an Act of Congress that says something like "all persons born in those islands [Virgin Islands] on or after February 25, 1927, and subject to the jurisdiction of the United States, are declared to be citizens of the United States at birth." 8 USC 1406. Notice any reference to citizenship of parents? Any application for citizenship, test, oath? Are they NBC or naturalized? One or the other, which is it?
I suggest you recalibrate your obfuscation detector.